An Effective Strategy on Synthesizing a Stable SiOx-Based Anode for High Density Lithium-Ion Batteries.
Chemistry
; 30(56): e202402300, 2024 Oct 08.
Article
in En
| MEDLINE
| ID: mdl-39049101
ABSTRACT
Silicon oxides (SiOx) have received extensive attention as a promising anode candidate for next-generation lithium-ion batteries (LIBs). However, their commercial applications have been seriously hindered by low conductivity, large volume expansion, and unstable solid-electrolyte interface (SEI) layer, which result in low initial coulombic efficiency, poor rate performance, and short cycling lifespan. In this work, we demonstrated a simple way to prepare a series of SiOx materials with lithium fluoride (LiF) modified. When the mass ratio of SiOx and LiF equaled 1 0.15, the long-term cycling capacity retention could be greatly improved from 30.1 % to 76.5 % after 300 cycles. The result was primarily because of the enhancement of electrons and Li+-ions transport and the stability of the SEI layer due to LiF addition. However, excess LiF addition could hinder the diffusion of Li+-ions. This study presented the great potential of LiF modified on SiOx anode materials for LIBs.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Chemistry
Journal subject:
QUIMICA
Year:
2024
Document type:
Article
Country of publication:
Alemania